Is there plan to implement extension for data aggregation

[danlzh]

My question in title. Are there plans for adding support to data aggregation query such as GET ~/Sales?$apply=aggregate(Amount with sum as Total)

moreover, is this project still maintained?

[nonbob]

I just stumbled across this. I haven't yet tried to run it past Antlr: http://docs.oasis-open.org/odata/odata-data-aggregation-ext/v4.0/cs02/abnf/odata-aggregation-abnf.txt